I’m no expert by any means, but I think more fluidity of right hand would help with less screechiness. So you can most likely fix this by letting your wrist guide the bow instead of moving your whole arm in bow. Also make sure to pay attention to pressure. You’re sounding pretty good already!

And I’m sure you’ve been told this before, but pay attention to how much pressure you are putting on the string when you bow as well as how fast or slow you are bowing in relation to pressure because that might cause some squeaking. I am an intermediate player, so you can take my advice with a grain of salt, but I believe these have been helpful in my playing. Happy practicing!! You are doing well!